/*
 * Licensed to the LF AI & Data foundation under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * //
 *     http://www.apache.org/licenses/LICENSE-2.0
 * //
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package error

import (
	"fmt"

	"github.com/cockroachdb/errors"
)

var (
	ClientErr   = NewClientError("")
	ServerErr   = NewServerError(errors.New(""))
	NotFoundErr = NewNotFoundError("")
)

type ClientError struct {
	msg string
}

func NewClientError(msg string) error {
	return &ClientError{msg}
}

func (c *ClientError) Error() string {
	return c.msg
}

func (c *ClientError) Is(err error) bool {
	_, ok := err.(*ClientError)
	return ok
}

type ServerError struct {
	err error
}

func NewServerError(err error) error {
	return &ServerError{err}
}

func (s *ServerError) Error() string {
	return s.err.Error()
}

func (s *ServerError) Is(err error) bool {
	_, ok := err.(*ServerError)
	return ok
}

type NotFoundError struct {
	key string
}

func NewNotFoundError(key string) error {
	return &NotFoundError{key}
}

func (n *NotFoundError) Error() string {
	return fmt.Sprintf("not found: [%s]", n.key)
}

func (n *NotFoundError) Is(err error) bool {
	_, ok := err.(*NotFoundError)
	return ok
}
